Which one of the following helps in absorption of phosphorus from soil by plants?

Options

A. Anabaena
B. Glomus
C. Rhizobium
D. Frankia

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks which organism helps in the absorption of phosphorus from the soil by plants.

2. **Review the Options**: The options provided are:
- 1st option: Anabena
- 2nd option: Glomus
- 3rd option: Rhizobium
- 4th option: Francia

3. **Understand the Function of Each Organism**:
- **Anabena**: A genus of cyanobacteria known for nitrogen fixation, not phosphorus absorption.
- **Glomus**: A type of fungus that forms mycorrhizal associations with plant roots, facilitating nutrient absorption, particularly phosphorus.
- **Rhizobium**: A genus of bacteria that forms symbiotic relationships with legumes to fix nitrogen, not specifically involved in phosphorus absorption.
- **Francia**: This is not a commonly recognized organism in the context of phosphorus absorption.

4. **Identify the Correct Answer**: Based on the understanding of the functions of these organisms, Glomus is known to help in the absorption of phosphorus from the soil through its mutualistic association with plant roots.

5. **Conclusion**: The correct answer to the question is **Glomus** (Option 2).

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